Leaf-turner



A. GANGWISCH.

LEAF TURNER..

ARPLICATION FILED MAY 21. 1919.

1,354,820, I Patented Oct. 5,1920.

UNITED STATES PATENT OFFICE.-

ALBERT GANGWISCH, or BREMERTON, wasnme'row;

LEAF-TURNER.

To rill whom it may concern:

Be it known that I, ALBERT GANGWISCH, a citizen of the United States, residing at Bremerton, in the county of Kitsap and State of Washington, have invented certain new and useful Improvements in Leaf-v Turners, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to devices for turning the leaves of books, music, etc., and particularly to that class of turning devices wherein there are provided a number of leaf engaging arms rotated in one direction by springs and attachable to the several leaves, these arms being released one by one whenever it is desired to turn a leaf.

The general object of my invention is to provide a very simple construction for this purpose having few parts and being entirely effective in actual practice.

A further object is to provide very simple means for releasing the spring arms one by one to cause the turning of the leaf.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a plan View of a leaf turner constructed in accordance with my invention' Fig. 1 is a fragmentary view showing the actuating member 19 shifted from the position shown in Fig. 1;

Fig. 2 is a section on the line 22 of Fig. 1; V

Fig. 3 is a sectional view on the line 3-3 of Fig. 4;

Fig. 4 is a section on the line 44 of Fig. 3; and

Fig. 5 is a section on the line 55 of Fi 1.

Tieferring to these drawings, it will be seen that my music leaf turner comprises a relatively small metallic base 10, which will be approximately wide and thick, and sufliciently long to reach across the book or music when the latter is open. Mounted upon the middle of the base 10 is an approximately semi-circular housing 11 having opposed side walls and inwardly extending flanges to leave an opening 12 extending through this housing. A rod 13 is attached to the housing and base and extends rearward therefrom, and is adapted to lie against the middle leaf of the book or Specification of Letters Patent.

Application filed May 21, 1919.

Patented Oct. 5, 1920.

Serial No. 298,739.

music. Preferably, though not necessarily, a small metallic strip 141 will be attached to the strlp 10 and extend therefrom at right angles and beneath the rod 13. Spring clamps 15 wlll be attached to the rear face of the base adjacent the opposite ends thereof, these clamps being formed with opposed aws adapted to engage the covers or fly leaves C of the book or music and hold them flat to the base and the book or music in an open position.

Mounted upon the rod 13 are a plurality of arms 16. Each of these arms is rotatably mounted on the rod 13 at one end and is engaged by a coiled spring 17 which urges the corresponding arm or rod 16 from right to left. Each of these arms 16 carries a leaf engaging clamp 18 which may be adustable upon the arm so as to engage leaves of different size.

Pivotally mounted upon the base 10 is a locklngand releasing member 19 having an operating arm 20 extending therefrom, this member 19 being formed to provide two detent teeth 21 and 22 disposed in different vertical planes. When the operatin g arm 20 is in the position shown in Fig. 1, the detent 22 will engage the outermost leaf turning arm 16 and hold it from rotation under the action of its spring. Then the operating arm 20 is shifted to the position shown in Fig. 1 the detent 22 will release the outermost arm 16, but before this happens, the detent 21 will engage the next arm below, so that one arm is released and the other arms are still held from actuation by their springs. Upon a release of the operating arm 20, it will swing back to its normal position, as shown in Fig. 1, and the detent 22 will again engage the outermost arm to prevent its movement until the operating arm 20 is again actuated. It will be seen that this is a very simple means for releasing the leaf turning arms one by one, and that in order to release an arm to turn a leaf, it is only necessary for the reader to move the arm 20 inward by a slight movement of his finger. whereupon the parts will be released, as before described. The arm 20 can be positively shifted outward by a spring.

While I have illustrated a form of my invention which I believe to be particularly effective in practice, it will be obvious that many changes might be made in the details of'construction and arrangement of parts without' departing from the spirit of the invention. My device is light, it is Very portable, it ma be 1easi1ya lied, and can be used with any desired base or merely rested upon a table or stand, and'the'parts may be readily made so that the whole device can'be foldeduip' and takenapart and bodying spaced opposed side walls providedcarried in the pocket; 7

I claim A music lea-f turner comprising, an elongated horizontal strip provided-with'clamping Ineansadjaeentits opposite ends and se; cured to the rear face thereof, a housing extending outwardly, from the front face.

of said strip and-substantially at the longitudinal center thereof, said housing emwith inwardly extending flanges, said flanges havingatheir adjacent face spaced to afiord a slot extending longitudinally with relation to said strip,-a vertically disposed tion, means carried by the strip for holding the arms in one position and successively releasing the arms, leaf engaglngchps longitudinallyadjustable upon said arms and a member carried by thelstrip at substantially its longitudinal center and disposed inthe same general directionas said rod.

' In testimony whereof I hereunto afiix my signature inthe' presence of two witnesses. ALBERr GA GWISOH.

Witnesses: r

ANGIE SMITH; JOHN LARKIN'. 

